The three sub-categories of the national defense budget
The national defense budget of the United States is divided into three main categories: military personnel, operation and maintenance, and procurement.
1. Military personnel: This category covers the costs associated with recruiting, training, and paying military personnel, including active duty military, reserve and National Guard units, and civilian personnel. It also includes funding for military healthcare and retirement benefits.
2. Operation and maintenance: This category covers the costs of operating and maintaining military equipment, facilities, and infrastructure. It includes funding for training, transportation, fuel, and supplies.
3. Procurement: This category covers the costs of acquiring new military equipment and weapons systems, including research and development, testing, and production. It also includes funding for upgrading and modernizing existing equipment